The An-2 was originally designed to a USSR
M;Inistry of Agriculture and Forestry
requirement, and as well as large scale civil
use was adopted in significant numbers by air
arms of numerous Soviet aligned countries for a
multitude of utility roles. First flown on August 31
1947, the An-2 entered production and service
the following year.
The unusual biplane configuration was chosen for
its good takeoff performance, docile low speed
handling and excellent climb rates, and the
wings were fifted with leading edge slats and
double slotted flaps, further improving
performance, while power was supplied by a 745kW
(1000hp) ASh-62 radial.